Hi Marko If that is the case, why doesn't your workbooks reflect this?
Atle Hardarson On Fri, Jan 21, 2011 at 11:45 AM, Marko Milivojevic <[email protected]> wrote: > I always maintained "swi mode access + swi noneg" on grounds of my own > paranoia. However, I learned to control that urge, as "swi mode > access" indeed disables DTP, as proven many times by so many people > and their debugs :-) > > -- > Marko Milivojevic - CCIE #18427 > Senior Technical Instructor - IPexpert > > FREE CCIE training: http://bit.ly/vLecture > > Mailto: [email protected] > Telephone: +1.810.326.1444 > Web: http://www.ipexpert.com/ > > On Thu, Jan 20, 2011 at 14:29, Nicolas MICHEL <[email protected]> wrote: >> ok Switchport mode access + Switchport mode access show that Trunking is >> not negotiated ... >> But I have also read on Ruhann's note that when they ask to config a static >> access port , Switchport nonegotiate is needed ... >> >> Marko, Tyson can you please confirm ? >> >> >> Thanks Yap for your time. >> >> >> >> >> >> 2011/1/18 Yap Chin Hoong - <[email protected]> >> >>> >>> Hi Nicholas, >>> I have tested that 'switchport mode access' + 'switchport nonegotiate' >>> is equivalent to 'switchport mode access' only. Switch ports configured with >>> both combinations of commands do not send DTP packets, as proven using the >>> 'debug dtp packets' privileged command on both Catalyst 2950 and Catalyst >>> 3560 series switches. >>> Below are some captures during my DTP studies. Thanks. >>> >>> TOS - Trunk Operational Status >>> >>> TAS - Trunk Administrative Status >>> >>> TNS - Trunk Negotiated Status >>> >>> TOT - Trunk Operational Trunking Encapsulation >>> >>> TAT - Trunk Administrative Trunking Encapsulation >>> >>> TNT - Trunk Negotiated Trunking Encapsulation >>> >>> >>> >>> >>> ================================================================================ >>> >>> C3560 >>> dynamic auto <> C3560 dynamic auto >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: dynamic auto >>> >>> Administrative >>> Trunking Encapsulation: negotiate >>> >>> Negotiation >>> of Trunking: On >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: >>> ACCESS/AUTO/ACCESS >>> >>> TOT/TAT/TNT: >>> NATIVE/NEGOTIATE/NATIVE >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> dynamic auto <> C2950 dynamic desirable >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: dynamic auto >>> >>> Administrative >>> Trunking Encapsulation: negotiate >>> >>> Negotiation >>> of Trunking: On >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: TRUNK/AUTO/TRUNK >>> >>> TOT/TAT/TNT: 802.1Q/NEGOTIATE/802.1Q >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> dynamic auto <> Cisco 2600 >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: dynamic auto >>> >>> Administrative >>> Trunking Encapsulation: negotiate >>> >>> Negotiation >>> of Trunking: On >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: >>> ACCESS/AUTO/ACCESS >>> >>> TOT/TAT/TNT: >>> NATIVE/NEGOTIATE/NATIVE >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> dynamic desirable <> C3560 dynamic auto >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: dynamic desirable >>> >>> Administrative >>> Trunking Encapsulation: negotiate >>> >>> Negotiation >>> of Trunking: On >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: >>> TRUNK/DESIRABLE/TRUNK >>> >>> TOT/TAT/TNT: ISL/NEGOTIATE/ISL >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> switchport trunk encapsulation dot1q, switchport mode trunk <> C3560 >>> dynamic auto >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: trunk >>> >>> Administrative >>> Trunking Encapsulation: dot1q >>> >>> Negotiation >>> of Trunking: On >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: TRUNK/ON/TRUNK >>> >>> TOT/TAT/TNT: >>> 802.1Q/802.1Q/802.1Q >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> switchport trunk encapsulation dot1q, switchport mode trunk, switchport >>> nonegotiate <> C3560 dynamic auto >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: trunk >>> >>> Administrative >>> Trunking Encapsulation: dot1q >>> >>> Negotiation >>> of Trunking: Off >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | >>> in TOS|TOT >>> >>> TOS/TAS/TNS: >>> TRUNK/NONEGOTIATE/TRUNK >>> >>> TOT/TAT/TNT: >>> 802.1Q/802.1Q/802.1Q >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> ================================================================================ >>> >>> C3560 >>> switchport mode access <> C3560 switchport mode access >>> >>> C3560#sh int fa0/1 >>> switchport | in Administrative Mode|Administrative Trunking|Negotiation >>> >>> Administrative >>> Mode: static access >>> >>> Administrative >>> Trunking Encapsulation: negotiate >>> >>> Negotiation >>> of Trunking: Off >>> >>> C3560# >>> >>> C3560#sh dtp int fa0/1 | in >>> TOS|TOT >>> >>> TOS/TAS/TNS: ACCESS/OFF/ACCESS >>> >>> TOT/TAT/TNT: >>> UNKNOWN/NEGOTIATE/UNKNOWN >>> >>> 0 bad TLVs, 0 bad TAS, 0 bad TAT, 0 bad >>> TOT, 0 other >>> >>> C3560# >>> >>> >>> >>> regards, >>> YapCH >>> http://itcertguides.blogspot.com/ >>> >>> > Message: 3 >>> > Date: Tue, 18 Jan 2011 13:15:49 +0100 >>> > From: Nicolas MICHEL >>> > To: OSL Routing and Switching >>> > Subject: [OSL | CCIE_RS] DTP for Dummies >>> > Message-ID: >>> > >>> > Content-Type: text/plain; charset=ISO-8859-1 >>> > >>> > Hey there. >>> > >>> > >>> > DTP is such an easy protocol . There are only few commands to enable or >>> > disable it. >>> > I've been reading so much crap about this since my CCNA on cisco forums >>> that >>> > I d like to discuss about it with you guys. >>> > >>> > >>> > Some people says that DTP can only be shutted with the command switchport >>> > nonegotiage. >>> > Some people says that DTP can only be shutted with the command switchport >>> > mode access .... >>> > >>> > >>> > I disagree and I noticed that switchport mode access did indeed shut the >>> DTP >>> > process .... >>> > >>> > Rack1SW1(config-if)#do sh int fa0/21 sw >>> > Name: Fa0/21 >>> > Switchport: Enabled >>> > Administrative Mode: static access >>> > Operational Mode: static access >>> > Administrative Trunking Encapsulation: dot1q >>> > Operational Trunking Encapsulation: native >>> > *Negotiation of Trunking: Off* >>> > Access Mode VLAN: 1 (default) >>> > Trunking Native Mode VLAN: 146 (VLAN0146) >>> > Administrative Native VLAN tagging: enabled >>> > Voice VLAN: none >>> > Administrative private-vlan host-association: none >>> > Administrative private-vlan mapping: none >>> > Administrative private-vlan trunk native VLAN: none >>> > Administrative private-vlan trunk Native VLAN tagging: enabled >>> > Administrative private-vlan trunk encapsulation: dot1q >>> > Administrative private-vlan trunk normal VLANs: none >>> > Administrative private-vlan trunk associations: none >>> > Administrative private-vlan trunk mappings: none >>> > Operational private-vlan: none >>> > Trunking VLANs Enabled: ALL >>> > Pruning VLANs Enabled: 2-1001 >>> > Capture Mode Disabled >>> > >>> > >>> > >>> > So what do you guys think about this newbie question ? :) >>> > >>> > >>> > -- >>> > Nicolas MICHEL >>> > Ingenieur R?seaux et Securit? (CCNA/CCNP) >>> > >>> >>> >>> >>> _______________________________________________ >>> For more information regarding industry leading CCIE Lab training, please >>> visit www.ipexpert.com >>> >> >> >> >> -- >> Nicolas MICHEL >> Ingenieur Réseaux et Securité (CCNA/CCNP) >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
